WASHINGTON -- The United States and Russia announced Monday the plan for a cessation of hostilities in Syria that will begin on Feb. 27, the US State Department said.

In a joint statement, the two countries said the ceasefire agreement will not apply to "Daesh", also known as the Islamic State, "Jabhat al-Nusra", or other terrorist organizations designated by the UN Security Council.

Any party engaged in conflicts in Syria will indicate to Russia or the US their commitment to and acceptance of the terms for the cessation of hostilities by no later than 12:00 (Damascus time) on Feb. 27, said the joint statement issued by the State Department.

"I am gratified to see the final arrangements concluded today for a cessation of hostilities in Syria and call on all parties to accept and fully comply with its terms," US Secretary of State John Kerry said.

If implemented and adhered to, Kerry said, this cessation will not only lead to a decline in violence, but also continue to expand the delivery of urgently needed humanitarian supplies to besieged areas and support a political transition to a government that is responsive to the desires of the Syrian people.